It’s not the next Higgs boson — yet. But the best explanation, physicists say, involves forms of matter and energy not currently known to science.

The worrisome development comes as officials and scientists across the country warn of a fourth possible surge of the coronavirus.

Billions of dollars from two Covid relief measures will be used to soften the financial blow for grieving families by reimbursing funeral and related expenses.

Regulators in Britain and the European Union both said on Wednesday that blood clots were a possible rare side effect of the AstraZeneca Covid-19 vaccine. Britain said it would offer alternative vaccines for adults under 30.

Losses for President Moon’s party.

Dr. Ghafouri helped survivors of an ISIS genocide and reunited formerly enslaved women with children taken from them. She died of Covid-19.

A scientific mission to China proposed further study for a number of topics. Critics and the director of the W.H.O. have weighed in as well.

Ursula von der Leyen, the European Commission president, stood as her colleagues President Recep Tayyip Erdogan of Turkey and Charles Michel took the only two available chairs during a photo opportunity in Ankara, Turkey, on Tuesday.

Violence by Islamist extremists in Africa reached a record high last year. Now, the Islamic State is using those attacks to project an image of strength.